Institutt for arktisk og marin biologi: Recent submissions
Now showing items 1-20 of 2044
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Studying the Expression of Bilberry Fruit Softening-related Cellulase (GH9) and Hemicellulase (XTH) Gene Families by Developing a Primer Selection Tool
(Master thesis; Mastergradsoppgave, 2023-05-14)Fruit softening is linked to degradation of cell walls by hydrolytic enzymes, such as members of GH9 and XTH family. In this study, we aim to identify the members of the large gene families that cause the cell wall modifying effects, as they can become a target of future research related to food waste prevention and biofuel production. A tool is developed to help in the process of finding qPCR primers ... -
Environmental effects monitoring of offshore oil and gas activities on the Norwegian continental shelf: A review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-04-24)This review examines the evolution and findings of Norway's offshore environmental monitoring (OEM) program over the past five decades. The program targets soft sediments, water column organisms, and deep-water epifauna across the Norwegian Continental Shelf (NCS) to assess the impacts of offshore oil and gas activities. The program is required by Norwegian authorities and financed by oil and gas ... -
Prevalence and density of Elaphostrongylus rangiferi larvae in faecal samples of semi-domestic reindeer (Rangifer tarandus tarandus) in Norway 2013-16
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-01-21)Background - The reindeer brainworm, Elaphostrongylus rangiferi, is a protostrongylid parasite of reindeer that has caused severe disease outbreaks in reindeer husbandry. E. rangiferi is considered ubiquitous in Norway, though most published prevalence studies are from Finnmark county only. In the present study, faecal samples were collected over three winter seasons (2013–2016) from eight herds of ... -
WORKSHOP MNT konferansen 2025: Praksis i disiplin og tverrfaglige studieprogram: Hva, hvorfor og hvordan?
(Conference object; Konferansebidrag, 2025)I løpet av de siste tiårene har flere fagmiljø i høyere utdanning i Norge utviklet og etablert praksisemner for studenter innen disiplinfagene biologi og geologi, samt det tverrfaglige studiet fiskeri og havbruksvitenskap. I denne workshopen vil vi gjennomføre en interaktiv “Jigsaw aktivitet” for å presentere og diskutere erfaringer og forskningsresultater fra implementeringen av disse praksisemnene ... -
Sjøpattedyrutvalget 2024 - Tilrådning om forskning og forvaltning
(Research report; Forskningsrapport, 2024)Sjøpattedyrutvalget hadde sitt årlige møte i Tromsø 18.-19. november 2024. Utvalgets oppgave er å utarbeide anbefalinger og tilrådninger om forskning og forvaltning av sjøpattedyr i Norge. Dette inkluderer kvoteråd for arter som fangstes eller jaktes. I denne rapporten oppsummeres sakene som ble behandlet på årets møte. -
Assessing variability in algal primary productivity and photophysiology: Case studies of sea ice algae from Svalbard fjords
(Master thesis; Mastergradsoppgave, 2022-05-16)Salinity is a major factor influencing sea ice algal activity in experimental settings and in nature. Decreases in salinity, occurring during the ice melting procedure, impact measurements of primary productivity and photophysiology of sea ice algae via <sup>14</sup>C-based incubations. Sea ice algae also face low salinity stress in their natural environments, for instance, due to seasonal melting ... -
Competition and interdependence define interactions of Nostoc sp. and Agrobacterium sp. under inorganic carbon limitation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-03-08)Cyanobacteria of the Nostoc genus are capable of forming symbiotic relationships with plants but also serve as a hub for heterotrophic bacteria. By comparing the axenic strain Nostoc punctiforme PCC 73102 and the xenic strains Nostoc sp. KVJ2 and KVJ3, we were able to demonstrate an almost obligate dependence of the cyanobacteria on the heterotrophic partners under carbon-limiting conditions. A ... -
Toward the integration of speciation research
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-16)Speciation research—the scientific field focused on understanding the origin and diversity of species—has a long and complex history. While relevant to one another, the specific goals and activities of speciation researchers are highly diverse, and scattered across a collection of different perspectives. Thus, our understanding of speciation will benefit from efforts to bridge scientific findings ... -
Policy documents considering biodiversity, land use, and climate in the European Arctic reveal visible, hidden, and imagined nexus approaches
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-03)The Arctic is experiencing rapid and interlinked socio-environmental changes. Therefore, governance approaches that take the complex interactions between climate change, biodiversity loss, increasing land use pressures, and local livelihoods into account are needed: nexus approaches. However, an overview of whether and to what extent Arctic policies address these nexus elements in concert has ... -
Diminishing warming effects on plant phenology over time
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-05)<ul> <li>Plant phenology, the timing of recurrent biological events, shows key and complex response to climate warming, with consequences for ecosystem functions and services. A key challenge for predicting plant phenology under future climates is to determine whether the phenological changes will persist with more intensive and long-term warming.</li> <li>Here, we conducted a meta-analysis of ... -
Trail cameras can greatly inflate nestpredation rates
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-27)Photographic monitoring currently provides the most accurate means for identifying nest predators and eventually their role in bird population declines worldwide. However, previous studies have found that commercially available trail cameras represent an artificial structure that tend to negatively bias predation rates, likely through predator neophobia. Based on an experiment in Arctic tundra, ... -
Circulation and Hydrography in the Northwestern Barents Sea: Insights From Recent Observations and Historical Data (1950–2022)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-13)The Barents Sea is one of the main pathways for warm and saline Atlantic Water (AW) entering the Arctic Ocean. It is an important region where water mass transformation and dense-water production contribute to the Atlantic meridional overturning circulation. Here, we present data from three cruises and nine glider missions conducted between 2019 and 2022 in the northwestern Barents Sea, and compare ... -
Accuracy of serological tests for bovine brucellosis: A systematic review and meta-analysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-21)The direct methods for diagnosis of bovine brucellosis have several limitations, therefore serological tests are the basis for the diagnosis of the disease. However, a meta-analysis estimating the diagnostic sensitivity (DSe) and diagnostic specificity (DSp) on the main tests used in bovine brucellosis control programs worldwide has not been performed. This systematic review and meta-analysis aimed ... -
Households neighboring wildlife protected areas may be at a higher risk of rabies than those located further away: a community-based cross-sectional cohort study at Pian Upe game reserve, Bukedea district, Eastern Uganda
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-22)Introduction: This study examines rabies incidence and associated risk factors at the interface between wildlife and human communities near Pian-Upe game reserve in Eastern Uganda. We hypothesized that human settlements in closer proximity to the reserve would exhibit higher rabies risk compared to those located further away.<p> <p>Methods: Using a standard questionnaire, households within <4, ... -
Red Fox (Vulpes vulpes) movement on the northern edge of range expansion [Insights from Accelerometery in Varangerhalvøya]
(Master thesis; Mastergradsoppgave, 2024-11-15)Red foxes (Vulpes vulpes) are expanding into Arctic regions, altering predator-prey dynamics and intensifying competition with native species such as the Arctic fox (Vulpes lagopus). This study examines the activity patterns of red foxes in Varanger, Norway, at the forefront of their Arctic range expansion, focusing on the effects of environmental factors (e.g., snow depth, temperature, precipitation) ... -
Status and spatial patterns of demersal marine fish communities in Northeast Greenland in the period 2002 – 2022
(Master thesis; Mastergradsoppgave, 2024-11-15)Tunup Avannaa Kalaallit Nunaanni nuna eqqissisimatitamiippoq nunarsuarmilu nuna eqqissisimatitaq anginerpaajuvoq avannarlersaallunilu. Inunnik tikinneqarsimanera annikilluinnarpoq, tamannalu pinngortitami pissutsinik allanngoriartornernik misissuiffigissallugu immikkut ittumik periarfissanik pilersitsivoq. Misissuinermi TUNU-programmimi umiarsuarni misissuiviusuni R/V Helmer Hanseni R/V Kronprins ... -
Flood Resilience in Pakistan Citizen Engagement, Government Initiatives, and Sustainable Development
(Master thesis; Mastergradsoppgave, 2024-11-15)This thesis analyses the impact of climate change, coupled with inadequate disaster management, on the rising frequency and severity of floods in Pakistan. The thesis focuses on the causes, socioeconomic impact, and government responses to floods by examining the interaction of natural and human elements. Due to the complexity of the research question, we have applied a multidisciplinary ... -
Estimating carrion biomass originating from Red deer Cervus elaphus and its ecological effect on vertebrate scavengers in Vestland county, Norway.
(Master thesis; Mastergradsoppgave, 2024-11-14)Ungulates make up the majority of carrion in numerous terrestrial ecosystems. Humans have removed large carnivores from many ecosystems, and carcass waste from human hunting has taken over as the most important source of carrion. Understanding the availability of carrion is therefore crucial for comprehending its ecological impact, and my goal was to assess carrion availability in Vestland county ... -
Benthic Fauna on Ridges and Abyssal Plains in the Central Arctic Ocean: Baseline Data for Future Management
(Master thesis; Mastergradsoppgave, 2024-11-15)The benthos of the Central Arctic Ocean (CAO) abyss is an underworld yet to be thoroughly and systematically understood. Although 50% of the Arctic is deep sea, most research has been focused on the continental shelves and the water column. This is largely because research in the CAO is challenging, especially due to the ocean being ice-covered. Yet, today, anthropogenic pressures on the CAO are ... -
Differences in Tri-Trophic Community Responses to Temperature-Dependent Vital Rates, Thermal Niche Mismatches and Temperature-Size Rule
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-02)Warming climate impacts aquatic ectotherms by changes in individual vital rates and declines in body size, a phenomenon known as the temperature-size rule (TSR), and indirectly through altered species interactions and environmental feedbacks. The relative importance of these effects in shaping community responses to environmental change is incompletely understood. We employ a tri-trophic food ...